Water-valve for instantaneous water-heaters.



E. RUU'D & H. s. HUMPHREY. WATER VALVE FOR INSTANT/KN EOUS WATER HEATERS.

APPLICATION FILED JUNE 15, I915- Patented Nov. 20-, 1917.

FEGJ- FIG-2.

ATTORNEY EDWIN noon, OFPITTSBURGH, PENNSYLVANIA, snionnnnnnrs. HUMPHBEY, "or

.KALAMAZOO, MICHIGAN, 'ASSIGNORS T BUUD MANUFACTURING COMPANY, OF

PITTSBURGH, PENNSYLVANIA, noonvonsrlon or new JERSEY.

WATER-VALVE Fo x ns'rnnmimoo's WATER- eston "To alt wiimmdt may concern. Be 1t known that we, E WIN Born), a cit zen ofthe United States, and resident of Pittsburgh, in the county oft-Allegheny and State'of Pennsylvania, and

HUMPHREY, 'a citizen of the United Suites, and resident of-Kalameizoo, in the county of Kalamazoo and State of Michigan, lmve'inventedcertain neW and useful Improvemerits in Tater-Valves for Instantaneous Water-Heaters, of-which the following is a specification.

' I This invention has particular reference to the water valve-"Which serves to actuate the gas valve, opening the latter for the passage moi gas to the burners when Water is being delivered from the heater, and the primary object is to provide simple and efficient means for i passing .vva-ter to the heater through the Water valve Without interfering with the gas-valve'operziting function of the latter. I

Under-certain conditions it is desirable to embody the Water valvein a packed piston, and in order to preserve the packing the arrangement should be such as to avoid movement of the packing over ports or oifsets in the casin in 'Whichit travels, and

to accomplish this the piston itself must be ported for the passage of water therethrongh instead of there-around. The present in ven-' 'tion is immediately concerned with a valve ntr'ol of eficient end-novel term for the piston port.

' The invention may be variously embodied,

some desirable adaptations thereof being illustrated in the accompanying drawings,

wherein Figurel is a vertical sectional view of a, Water valve showing one form of the invention, the same being illustrated in connectlon with a conventional e.mbod 1ment'of a gas valve, and'Fig. is sectional .vie ;v of a water valve of modified construction.

Referring to the drawings, 1 designates a, water valve casing'having the cylindrical intermediate'portion- 2. One endof the easing is provided witha ater inletS, and its opposite end with an outlet 4. As her,e

' shown theinlet end is closed by the removable head or cap 5 for gaining access to the valve -mechanism Fitting and movable Within part 2. of the casing is piston 6 which 1 is oreferahlv nrovided with packing 7, the

pletes its movement in 0 form or" frame element or I Specification of Letters Patent; 7 I"slim-31g 5 1 N 2k}, 191% Replication filedJime 15, 1915. Serialnoi 35 250.

arrangement being such that me piston com posite directions without' causing the poo ring to traverse either the inlet or the outlet ports.

Adapted to be actuate stem 8 which alines with stem 9 of gasvolve 10, the latter beingconventionally shown as normally closing port 11 of gas chamber 12 under the influence of spring 13-.

d by piston (3 is The ater and gas valve structures may be 8 extends through port 16, and is secured by spider 20 to the inlet side of the piston. Check valve 1'? is movable on stem 8, is adapted to open toward the casing inlet,

is t

' 19 in the outlet portion of the casing. Stem andis normally closed by spring 21. Piston 6 is held normally projected toward the inlet end of the casing by spring 22. i

In oper'atio n upon lowering the pressure in outlet a as by opening'a faucet served by the heater, thennun pressure at 111191; 3

advances the piston in opposition to spring 22 thereby opening the gas valve through the cocci-ion oi stems 8 and 9, as will be understood. The arangement ispreferably such that the piston travels through a considereble portion of its gas-valve opening movement and opens Silld velvet before check valve 1". is opened by stop 19. Then this stop'is reached it stops the forward 1n0vec ment of check valve 17 and is thus caused to open toward the casing inlet in opposition to'spring 21, thereby opening port 16, and permitting Water to pass through the piston from the casing inlet 3 to outlet 4. -Upon closing the faucet, the pressures at opposite sides ofithe piston are equalizedthrough the small port 23 and the piston is restored to normal position by spring 22, andvalve 17 is permitted to close under the pressure its of sprin 9, The hack and forth movement of pen 6 in either direction does not :1 g 7 over either the casing inlet so that the, piston is maintained 1;.

or outle 5 water-t e QIn "g2, valvel7 is provided with the solid shank 24 which engages the upper ex- A trelnaty of rod 8 instead of passing the latter upwardly through the valve and securing 10 it to the upper portion of the piston as in 1 fig. 1; otherwise the construction is the ame. rod 8" is not positively connected tothe piston but receives its gas-valve openforce through check valve 17 the check 47a ve spring 21 must be stronger than gas valve spying 13 so that the check valve will remain gclosed until the gas valve has been opened. 7

It is characteristic of each adaptation that the piston controllillggfvalve opens toward the casing inlet an is to close under the Inam pressure in the casing inlet. The v lve travels with the piston during the fir t portion of the ion 25 ward movement and until the gas valve has been opened. Movement of the piston check valve is then arrested, thereby opening the unported portion of the casing so that there is no tendenc; to cut or unduly wear the king. It is further characteristic that thereby causing the pressure to be equal at ,avoidm cramping and sticking oi. the pis- *ton wit in thema'sing. We claim:

In a water "valve for instantaneous .ater heaters, the-combination of a casing having a watelg ginlet and an outlet, a piston {movable in the 'casi between the inlet and '45, outlet, the pp'iston i hrmed with a central chamber open'at its ends watery-"a check valve movable within the chamber for closing; one end thereof, a spring within the chamber for opposing I p movement of the check valve, means ghadejbperative by the movement ofthe pist'on' for evenin the check valve. a nolly hence its tendency ported center and for the passage of ing said check :means made operative by tennis? closed gas valve, and means actuated by the piston for opening the gas valve.

2. In a water valve for instantaneous water heaters, the combination of a casing having a water inlet and an outlet, a ported piston movable inlet and outlet, at gas-valve actuating stem secured to the piston and extending through the piston port and also through the said casing, a check valve for the piston port slidable on said stem, and means made op erative by movement of the piston valve.

In a Water valve for instantaneous water heaters, the combinatio i of a casing havinga water inlet and an outlet, a ported piston movable in the casing between the inlet and outlet, a gas-valve actuating stem secured to the piston and extending through the piston port and through the casing, a check valve for the piston port, the valve in the casing between the for openformed with an opening through which said rod extends and by means of which the check valve is guided in its opening and closing movements, and. means made operative by movement of the piston for moving the check valve on the rod and thereby opening the same;

4. In a water valve for instantaneous water heaters, the combination I having a water inlet and an outlet, a piston movable'in the casing between the inlet and outlet, the piston ported for establishing communication between the inlet and outlet, a gas-valve actuating rod secured to the piston and movable therewith and extending therefrom through the outlet portion of the casing, a check valve for the piston portmovable with the piston and adapted to open toward the casin inlet, the valve formed with an opening "or sliding on the red when openingand when closing, and the movement of the piston toward the casing outlet for open ing said check valve.

In testimony whereof we affix our signatures in presence of two witnesses.

' EDWIN ,RUUD. HERBERT S. HUMPHREY. Witnesses:

J. M. :NESBIT, Etna MoOennnnn of a casing 

